Summary description

L6725

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Summary description

The device is a low cost pwm controller dedicated for low voltage distributed DC-DC. The input

voltage can range from 1.8V to 14V, while the supply voltage can range from 4.5V to 14V. The

output voltage is adjustable down to 0.6V.

High peak current gate drivers provide for fast switching to the external power section, and the

output current can be in excess of 20A. The device is capable to manage minimum on-times

switching frequency. In order to guarantee a real overcurrent protection, also with very narrow

necessary, two different current limit protections can be externally set through an external

resistor. The device can sink current after the soft-start phase while, during the soft-start, the

sink mode capability is disabled in order to allow a proper start-up also in pre-biased output

voltage conditions. Other features are over-voltage-protection and thermal shutdown.

1.1

Functional description

Figure 1.

Block diagram